The allegedly 12,000 yrs old blocks at Puma Punku are poured concrete, the cement block above has indentations for electrical and phone lines, as well it has acquired more weathering in the interval between both shots being taken, than it did in the previous 12,000 yrs .. gimme a break!!

The Puma Pinku region is highly volcanic, there is a type of natural cement that can be made from untreated volcanic gravel .. see at right the concrete dome in the Tempio di Venere e Roma inaugurated by Emperor Hadrian in AD 135 .. which surely resembles the blocks at Puma Pinku.